Coal drill mount



0m., 5, 1954 D. E. BlssELl. ET AL COAL DRILL MOUNT 3 Sheets-Sheet 1 Filed Nov. l0 1949 Inventors rII Il Dona/d E Bissell James W. Bissell Walter E. Bissell Get, 5, l954 D. E. Bissau. ET AL COAL DRILL MOUNT 3 Sheets-Sheet 2 Filed Nov. 10, 1949 Inl/enter Bona/d E. Bissell James W. Bissell Waller E. Bissell W 5 Attorneys Och 5 l954 D. E. BlssELl. ETAL 2,690,896

COAL DRILL MOUNT Filed Nov. 1o, 1949 s sheets-sheet 3 Patented Oct. 5, 1954 COAL DRILL MOUNT Donald E. Bissell, James W. Bissell, and Walter E. Bissell, J asonville, Ind.

Application November 10, 1949, Serial No. 126,596

1 Claim.

This invention appertains to a coal mining machine and has for its primary object to enable blasting holes to be conveniently, efficiently and speedily drilled perpendicular in a coal face.

Another important object of this invention is to provide a drilling machine, especially designed and adapted for utilization in drilling blast holes, the machine being extremely maneuverable in operation, so that it may be easily and quickly positioned for operation in any desired relation to the coal face.

A further important object of this invention is to provide a portable support for a drilling mechanism and to mount the drilling mechanism on the support in such a manner that the mechanism is selectively adjustable and movable into various positions in plurality of directions and planes.

Yet another important object of this invention is to provide inexpensively constructed and maintained drilling apparatus, which can be adjusted manually with a minimum of manual labor.

These and ancillary objects and structural features of merit are attained by this invention, the preferred embodiment of which is set forth in the following description and illustrated in the accompanying drawings, wherein:

Figure l is a side elevational View of the portable drilling apparatus;

Figure 2 is a top plan View;

Figure 3 is an enlarged elevational view, with the drilling apparatus folded back in an inoperative position overlying the tram;

Figure 4 is an enlarged longitudinal sectional View of the supporting boom taken on line 4-4 of Figure 2;

Figure 5 is a transverse sectional View taken on line 5--5 of Figure 1;

Figure 6 is an enlarged sectional view taken on line 6-6 of Figure l;

Figure '7 is a transverse sectional view taken on line 'i-l of Figure l; and, y

Figure 8 is a transverse sectional View taken on line 8 8 of Figure 2.

This invention relates to a portable drilling apparatus for drilling blast holes in a coal vein and generally consists of a portable tram, upon which a support is rotatably mounted in a vertical plane. The support receives a boom, which is rigidly attached thereto, so that the boom, which f is horizontally disposed, can rotate on the tram through a horizontal arc of 360. A support is mounted on the free end of the boom and also is capable of rotation through an arc of 360. Vertically movable means is carried by the support on the boom and is actuated by hydraulic means, the vertical means supporting a drill motor bracket, which is pivotally mounted thereon. The drill driving mechanism, which is carried by the bracket, is, therefore, universally connected to the tram and supported thereby, so that the drill mechanism is adjustable in various directions and planes for operative positioning transverse to the vein ci' face of the coal or similar material.

Attention is now directed to the accompanying drawings, wherein it will be noted that a conventional tram or truck ill, which is mounted on wheels l2 is provided, the tram forming a stationary support for the drill driving mechanism I4, the mechanism being universally connected to the tram by means of the connecting means, generally designated as at i6.

A tubular post I8 is mounted on a horizontal base 20 which is superimposed on the upper face of the tram, so that the post is disposed perpendicular to the horizontal tram. Bearing assemblies 22 and 24 are disposed concentric to the post, at the opposing ends thereof, the lower assembly being seated on a collar 26 concentric to the lower end of the post. Tapered rollers or ball bearings 28 are employed in the bearing assemblies. A cylindrical support 30 is rotatably mounted on the bearing assemblies, the support being formed with vertically spaced annular shoulders 32 for receiving the bearing assemblies, as seen in Figure 4. An annular flange 34 is formed on the lower end of the cylindrical support, sealing means 36 being concentric on the collar 26 to seal the lower end of the support from the collar and sealing means 38 being provided at the upper end of the post for sealing the cylindrical support.

A boom 4U is rigidly secured to the cylindrical support and projects laterally therefrom, the boom being horizontally disposed and preferably consisting of an elongated square post. A plate 42 extends diagonally between the upper end of the cylindrical support and the post to enclose opening Mi in the boom and an opening 46 in the upper end of the cylindrical support.

It can be seen that the boom rigidly carried by the cylindrical support is rotatable about the vertical axis of the post i8. Locking means 48 is provided for locking the boom in a forwardly projecting position, as seen in Figure 2. The locking means includes a sleeve 59 which has its lower end Welded or otherwise secured on the upper face of the flange 34. An upper sleeve 52 is disposed in alignment with the sleeve 5D and the complementary edges of the sleeve are beveled as at 54 to form cam surfaces. A locking pin 56 is positioned Within the aligned sleeve and secured to the upper sleeve 52 by lateral pins 58. The pin 56 projects through vertical openings 6|] in the base 20 and a registerable vertical opening B2 in the flange, the opening 62 being aligned with the sleeve. The pin 56 terminates in an axially reduced upper end 64 Which is vertically disposed through the horizontal section of an angle member 66, the member 66 being Welded as at 68 to the boom. A spring 16 is disposed on the reduced end 64 and functions to yieldingly urge the pin into the opening 66 in the base. An arm 12 projects integrally from the upper sleeve section 52 and extends laterally therefrom, the arm being pivoted to an elongated operating rod 14. The opposing end of the rod is pivoted within the clevis end 16 of the bar 18 extending through a transverse slot 8|) in the boom. A pin 82 is vertically disposed through the opposing end of the bar to retain the same within the transverse slot 86.

It can be seen that with the pin 56 inserted in the base, the boom is held against rotation about the post I8. However, a pull exerted on the bar 12 will produce a raising movement of the pin from the face, the upper sleeve 52 being raised by complementary cam edges and raising the pin against the urging of the spring. The boom can then be rotated either clockwise or counterclockwise and when the pin 58 overlies the opening 66 in the base, the spring will automatically return the pin to its locked keying position.

A base member 82 is mounted on the outer end of the boom and a cylindrical support 84 is concentrically disposed on a vertically positioned tubular post 86, the post being mounted on the base 82. Bearing assemblies 88 are disposed concentric on the post and spaced the vertical support from the post. An annular flange 98 is formed on the lower end of the support and overlies the base 82, locking means 62 being provided and engageable in the ange and base to lock the cylindrical members against rotation on the post. The locking means 92 consists of a sleeve 94 extending upwardly from the flange and aligned with the vertical opening 66 in the flange. A vertical opening 88 is formed in the base and is registerable with the opening in the fiange to receive a locking pin |68, having an upper axially reduced end |62. jects from the supporting member and is formed with a vertical opening to receive the upperV end of the pin. One end |66 of a bell crank |68 is secured on the end |02 of the pin and positioned thereon by a stop I|0.

A pair of vertical support bars I I2 and I |4 are seated on the flange 96 and secured to the cylindrical supporting member 84, the bars being transversely spaced and having vertically spaced transversely disposed journal pins or rods I I6 and IIS mounted therein. Collars |26 and |22 are rotatably disposed on the opposing projecting ends of the rod I I8, the collars being held thereon in abutting engagement of spacers |24 engaging the outer surface of the supporting bars by securing caps |26. Elongated tubes |28 and |38 are secured to the collars and, in a similar manner, collars |32 are mounted on the extending ends of the pin ||6 to support extending tubular members |34 and |36. The tubes |28 and converge inwardly at their outer ends and are joined to a common collar |38, the tu- A lateral bracket |64 pro-- bular members |34 and |36 being similarly positioned and joined to a collar |46. The collars |38 and |46 are vertically spaced and are rotatably disposed on supporting pins transversely disposed through the parallel walls |44 and |46 of a channel bar |48. The tubes |28 and |30 form chords of a triangular truss which also includes the collar I 38 and the pivot pin I I8 while the tubes |34 and |36 form the chords ofa lower triangular truss which also includes the collar |48 and the pivot pin IIB. The two trusses are in spaced parallel relation.

Brackets |58 and |52 are secured to the web of the channel bar and are vertically spaced thereon, the brackets supporting the drilling mechanism |4. The mechanism consists of a motor |64, which is preferably an electric motor actuated by electric current derived from fiexible conductors |56 which extend through the post I8 and enter the boom through the openings 44 and 48 covered by the shield 42, as seeniniFigure 4. A socket |58 is rotated `by the motonand: is adapted to receive a drill bit |66, with a positioning housing |62 for a lead screw (not shown) of the drilling mechanism I4 projecting in opposite direction from the motor. A square sleevev |64 is secured by a plate |66 to the motor-hous ing and a rod |68 is vertically disposed through.- the bracket |56 and is formed with enlarged upper end |16 received within the sleeve and attach-- ing the 'motor to the channel bar |48.

Hydraulic means is provided for raising and lowering the parallelogram support, consisting of the upper and lower triangular trusses, the hydraulic means being preferably manually actuated and consisting of an hydraulic double-acting motor |1I which includes a cylinder |12 which. is formed at its closed end with a collar |14 rotatably journaled on the pin ||6 between the bars II2 and H4. A piston rod |16 is Workably' mounted in the cylinder and is formed at its:

outer end with a transverse sleeve |18 positionedL on the central portion of a rod |88 disposed transversely between a pair of complementary ears; |82 carried by the tubes |28 and |36. Ay lateral connection |84 projects from the cylinder and exible conduits |38 extend from the connection to a manually operated hydraulic pump |88. The pump is mounted on brackets and |92 extending laterally from the tubular member |34.

As seen in Figure 1, the crank |08 is operated by an elongated rod |84, having its oppositeend.

pivoted to a vertical bar |96 disposed between the tubes |28 and |34. The bar |96 is carried by one end of a shaft |98 which is journaled in. a sleeve 26|) carried by the tubes |28 and |30. The opposite end of the shaft |98 has rigidly secured thereto a handle 202 for operating thev bar |86.

In operation, it can be seen that the boom-can' be rotated about the vertical post I8 and the parallelogram can be rotated about the vertical post 86 mounted on the outer end of the boom. The drilling mechanism proper canbe vertically rotated by means of the pin |68, so that the drilling mechanism is universally mounted on and carried by the portable tram. Thus, the tram can be moved by the wheels I2. on the conventional tracks in a mine and the drill'- ing mechanism can be operated, without moving the tram from the tracks, the drilling mechanism being extremely maneuverable and the maneuverability being manually controlled in a simple and convenient manner.

Having described the invention, what is claimed as new is:

In a mine drilling apparatus, a wheel mounted tram, a horizontal boom, a vertical post on said tram, a cylindrical member fixed to one end of said boom and rotatably mounted on said post, means for locking said member against rotation on said post, a turntable mounted on the outer end of said boom for rotation about a vertical axis, parallel triangular trusses having diverging chords connected at spaced ends by pivot pins, said pivot pins pivotally securing said trusses to said turntable in spaced relation, a vertical drill support pivotally connected to outer ends of said trusses, a hydraulic motor having one end connected to one of said pivot pins, the other end of said hydraulic motor being connected to the truss distant from said one pivot pin intermediate the ends of the last mentioned truss, said hydraulic motor being disposed between vertical planes passing through the chords of said trusses, and a hydraulic pump carried by one of said trusses operatively connected to said hydraulic motor.

References Cited in the le of this patent UNITED STATES PATENTS 

